MIC5357 Datasheet, PDF (5/11 Pages) Micrel Semiconductor – High Performance, Low Noise Dual 500mA ULDO™

Micrel, Inc.
Typical Characteristics
Ground Current
vs. Output Current (VOUT1)
100
95
90
VIN=4.3V
85
VOUT1=3.3V
CIN=COUT=2.2μF
80
0 50 100 150 200 250 300 350 400 450 500
OUTPUT CURRENT (mA)
Output Voltage
vs. Input Voltage
3.6
3.5
3.4
100μA
3.3
3.2
3.1
3
2.9
500mA
2.8
2.7
VOUT1=3.3V
CIN=COUT=2.2μF
2.6
2.5
2.5 3 3.5 4 4.5 5 5.5
INPUT VOLTAGE (V)
Dropout Voltage
vs. Temperature
150
CIN=COUT=2.2μF
135
120
105
90
300mA
500mA
75
60
150mA
45
30
50mA
15
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Power Supply Rejection Ratio
-90
150mA
-80
300mA
500mA
-70
100µA
-60
-50
-40
-30 VEN1=VIN=4.74V
VOUT1=3.3V
-20 _{COUT1=2.2µF}
-10 CBYP=0.1µA
0
10
100
1000 10000 100000
FREQUENCY(Hz)
January 2011
Ground Current
vs. Output Current (VOUT2)
100
95
90
VIN=4.3V
85
VOUT2=2.8V
CIN=COUT=2.2μF
80
0 50 100 150 200 250 300 350 400 450 500
OUTPUT CURRENT (mA)
Output Voltage
vs. Input Voltage
3
2.9 _100μA
2.8
2.7
500mA
2.6
2.5
2.5
VOUT2=2.8V
CIN=COUT=2.2μF
3 3.5 4 4.5 5 5.5
INPUT VOLTAGE (V)
Dropout Voltage
vs. Output Current
120
105
90
75
60
45
30
15
0
0
`
VOUT1=3.3V
CIN=COUT=2.2μF
100 200 300 400 500
OUTPUT CURRENT (mA)
Output Noise
Spectral Density
10
1
0.1
VIN=4.7V
V OUT2=1.8V
0.01
0.001
CIN-COUT=2.2µF/6.3V
IL=250mA
Noise Output (10Hz to
100Khz)=51.16µVrms
10
100 1000 10000 100000 1000000
FREQUENCY (Hz)
5
MIC5357
Ground Current vs.
Temperature(Dual Outputs)
180
170
IOUT1=500mA , IOUT2=500mA
160
150
140
130
120
110
IOUT1=500mA
100
90
80
70
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Output Voltage
vs. Output Current
3.6
3.5
3.4
VOUT1
3.3
3.2
3.1
VIN=4.3V
CIN=COUT=2.2μF
3
2.9 VOUT2
2.8
2.7
2.6
2.5
0
100 200 300 400 500
OUTPUT CURRENT (mA)
Current Limit
vs. Input Voltage
1200
1150 VOUT2=2.8V
1100
1050
1000
950
VOUT1=3.3V
900
850
CIN=COUT=2.2μF
800
2.5 3 3.5 4 4.5 5 5.5
INPUT VOLTAGE (V)
M9999-011311